[INFO] cloning repository https://github.com/rapaktech/rust-smart-pointers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rapaktech/rust-smart-pointers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frapaktech%2Frust-smart-pointers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frapaktech%2Frust-smart-pointers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2957202fc0a052d18e65b7c092f9d7025df6861
[INFO] testing rapaktech/rust-smart-pointers against 1.76.0 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frapaktech%2Frust-smart-pointers" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rapaktech/rust-smart-pointers on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rapaktech/rust-smart-pointers
[INFO] finished tweaking git repo https://github.com/rapaktech/rust-smart-pointers
[INFO] tweaked toml for git repo https://github.com/rapaktech/rust-smart-pointers written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rapaktech/rust-smart-pointers already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc2ada1a2f902546432ac1113e6c803a6344748c18a5261a3d3242565f9630bc
[INFO] running `Command { std: "docker" "start" "-a" "dc2ada1a2f902546432ac1113e6c803a6344748c18a5261a3d3242565f9630bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc2ada1a2f902546432ac1113e6c803a6344748c18a5261a3d3242565f9630bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc2ada1a2f902546432ac1113e6c803a6344748c18a5261a3d3242565f9630bc", kill_on_drop: false }`
[INFO] [stdout] dc2ada1a2f902546432ac1113e6c803a6344748c18a5261a3d3242565f9630bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 940bee2f12011255b01b4abad0d1fa0cf6840cb473e9767537deb3ce3a2a1844
[INFO] running `Command { std: "docker" "start" "-a" "940bee2f12011255b01b4abad0d1fa0cf6840cb473e9767537deb3ce3a2a1844", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-smart-pointers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Cons` and `Nil` are never constructed
[INFO] [stdout]   --> src/lib.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | enum List {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 44 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 45 |     Nil,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/lib.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `RefCons` and `RefNil` are never constructed
[INFO] [stdout]   --> src/lib.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | enum RefList {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 70 |     RefCons(i32, RefCell<Rc<RefList>>),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 71 |     RefNil,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `tail` is never used
[INFO] [stdout]   --> src/lib.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl RefList {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 77 |     fn tail(&self) -> Option<&RefCell<Rc<RefList>>> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ref_main` is never used
[INFO] [stdout]   --> src/lib.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn ref_main() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "940bee2f12011255b01b4abad0d1fa0cf6840cb473e9767537deb3ce3a2a1844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "940bee2f12011255b01b4abad0d1fa0cf6840cb473e9767537deb3ce3a2a1844", kill_on_drop: false }`
[INFO] [stdout] 940bee2f12011255b01b4abad0d1fa0cf6840cb473e9767537deb3ce3a2a1844
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5a484173ec49efed258d64f82ec8979b1c0b5dd00601287eeff41af30952515
[INFO] running `Command { std: "docker" "start" "-a" "d5a484173ec49efed258d64f82ec8979b1c0b5dd00601287eeff41af30952515", kill_on_drop: false }`
[INFO] [stdout] warning: variants `Cons` and `Nil` are never constructed
[INFO] [stdout]   --> src/lib.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | enum List {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 44 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 45 |     Nil,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/lib.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `RefCons` and `RefNil` are never constructed
[INFO] [stdout]   --> src/lib.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | enum RefList {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 70 |     RefCons(i32, RefCell<Rc<RefList>>),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 71 |     RefNil,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rust-smart-pointers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `tail` is never used
[INFO] [stdout]   --> src/lib.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl RefList {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 77 |     fn tail(&self) -> Option<&RefCell<Rc<RefList>>> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ref_main` is never used
[INFO] [stdout]   --> src/lib.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn ref_main() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "d5a484173ec49efed258d64f82ec8979b1c0b5dd00601287eeff41af30952515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5a484173ec49efed258d64f82ec8979b1c0b5dd00601287eeff41af30952515", kill_on_drop: false }`
[INFO] [stdout] d5a484173ec49efed258d64f82ec8979b1c0b5dd00601287eeff41af30952515
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 88aa77495427d04540f3320e7f110c0b369c84d9d275833eafc3b7a4f42457a4
[INFO] running `Command { std: "docker" "start" "-a" "88aa77495427d04540f3320e7f110c0b369c84d9d275833eafc3b7a4f42457a4", kill_on_drop: false }`
[INFO] [stderr] warning: variants `Cons` and `Nil` are never constructed
[INFO] [stderr]   --> src/lib.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 43 | enum List {
[INFO] [stderr]    |      ---- variants in this enum
[INFO] [stderr] 44 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 45 |     Nil,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]   --> src/lib.rs:52:4
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `RefCons` and `RefNil` are never constructed
[INFO] [stderr]   --> src/lib.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 69 | enum RefList {
[INFO] [stderr]    |      ------- variants in this enum
[INFO] [stderr] 70 |     RefCons(i32, RefCell<Rc<RefList>>),
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 71 |     RefNil,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `RefList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: method `tail` is never used
[INFO] [stderr]   --> src/lib.rs:77:8
[INFO] [stderr]    |
[INFO] [stderr] 76 | impl RefList {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] 77 |     fn tail(&self) -> Option<&RefCell<Rc<RefList>>> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `ref_main` is never used
[INFO] [stderr]   --> src/lib.rs:85:4
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn ref_main() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-smart-pointers` (lib) generated 5 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_smart_pointers-5450ddbb42073c23)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::it_runs_main ... ok
[INFO] [stdout] test tests::it_sends_an_over_75_percent_warning_message ... ok
[INFO] [stderr] 
[INFO] [stderr] thread 'tests::it_runs_ref_main' has overflowed its stack
[INFO] [stderr] fatal runtime error: stack overflow
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/rust_smart_pointers-5450ddbb42073c23` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "88aa77495427d04540f3320e7f110c0b369c84d9d275833eafc3b7a4f42457a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88aa77495427d04540f3320e7f110c0b369c84d9d275833eafc3b7a4f42457a4", kill_on_drop: false }`
[INFO] [stdout] 88aa77495427d04540f3320e7f110c0b369c84d9d275833eafc3b7a4f42457a4
[INFO] testing rapaktech/rust-smart-pointers against beta-2024-02-10 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frapaktech%2Frust-smart-pointers" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rapaktech/rust-smart-pointers on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rapaktech/rust-smart-pointers
[INFO] finished tweaking git repo https://github.com/rapaktech/rust-smart-pointers
[INFO] tweaked toml for git repo https://github.com/rapaktech/rust-smart-pointers written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rapaktech/rust-smart-pointers already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 557ddacef96c9e638150be45f348855bff1e6aeb5ef8be2bbe2d7c60f6355222
[INFO] running `Command { std: "docker" "start" "-a" "557ddacef96c9e638150be45f348855bff1e6aeb5ef8be2bbe2d7c60f6355222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "557ddacef96c9e638150be45f348855bff1e6aeb5ef8be2bbe2d7c60f6355222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "557ddacef96c9e638150be45f348855bff1e6aeb5ef8be2bbe2d7c60f6355222", kill_on_drop: false }`
[INFO] [stdout] 557ddacef96c9e638150be45f348855bff1e6aeb5ef8be2bbe2d7c60f6355222
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 054c5e6a5effa72b1c1e0301ae5b19ff73ccf449ce78091249e6f92888e2baaa
[INFO] running `Command { std: "docker" "start" "-a" "054c5e6a5effa72b1c1e0301ae5b19ff73ccf449ce78091249e6f92888e2baaa", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-smart-pointers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Cons` and `Nil` are never constructed
[INFO] [stdout]   --> src/lib.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | enum List {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 44 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 45 |     Nil,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/lib.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `RefCons` and `RefNil` are never constructed
[INFO] [stdout]   --> src/lib.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | enum RefList {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 70 |     RefCons(i32, RefCell<Rc<RefList>>),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 71 |     RefNil,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `tail` is never used
[INFO] [stdout]   --> src/lib.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl RefList {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 77 |     fn tail(&self) -> Option<&RefCell<Rc<RefList>>> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ref_main` is never used
[INFO] [stdout]   --> src/lib.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn ref_main() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> src/main.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |         Cons(i32, Box<List>),
[INFO] [stdout]   |         ---- ^^^  ^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 7 |         Cons((), ()),
[INFO] [stdout]   |              ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/main.rs:85:16
[INFO] [stdout]    |
[INFO] [stdout] 85 |         RcCons(i32, Rc<RcList>),
[INFO] [stdout]    |         ------ ^^^  ^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 85 |         RcCons((), ()),
[INFO] [stdout]    |                ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "054c5e6a5effa72b1c1e0301ae5b19ff73ccf449ce78091249e6f92888e2baaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "054c5e6a5effa72b1c1e0301ae5b19ff73ccf449ce78091249e6f92888e2baaa", kill_on_drop: false }`
[INFO] [stdout] 054c5e6a5effa72b1c1e0301ae5b19ff73ccf449ce78091249e6f92888e2baaa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca95f813f7e11c5633c89f9556da3777a72d9a217ecf3e5d97a695bd324de87e
[INFO] running `Command { std: "docker" "start" "-a" "ca95f813f7e11c5633c89f9556da3777a72d9a217ecf3e5d97a695bd324de87e", kill_on_drop: false }`
[INFO] [stdout] warning: variants `Cons` and `Nil` are never constructed
[INFO] [stdout]   --> src/lib.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | enum List {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 44 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 45 |     Nil,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/lib.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `RefCons` and `RefNil` are never constructed
[INFO] [stdout]   --> src/lib.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | enum RefList {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 70 |     RefCons(i32, RefCell<Rc<RefList>>),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 71 |     RefNil,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rust-smart-pointers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `tail` is never used
[INFO] [stdout]   --> src/lib.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl RefList {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 77 |     fn tail(&self) -> Option<&RefCell<Rc<RefList>>> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ref_main` is never used
[INFO] [stdout]   --> src/lib.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn ref_main() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/lib.rs:44:10
[INFO] [stdout]    |
[INFO] [stdout] 44 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stdout]    |     ---- ^^^^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 44 |     Cons((), ()),
[INFO] [stdout]    |          ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lib.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |     RefCons(i32, RefCell<Rc<RefList>>),
[INFO] [stdout]    |     ------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 70 |     RefCons((), RefCell<Rc<RefList>>),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "ca95f813f7e11c5633c89f9556da3777a72d9a217ecf3e5d97a695bd324de87e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca95f813f7e11c5633c89f9556da3777a72d9a217ecf3e5d97a695bd324de87e", kill_on_drop: false }`
[INFO] [stdout] ca95f813f7e11c5633c89f9556da3777a72d9a217ecf3e5d97a695bd324de87e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2c86839eaf2955db12fe4cbc26d7f3f1a7c82cca61baf1be4f501fe0686f2b45
[INFO] running `Command { std: "docker" "start" "-a" "2c86839eaf2955db12fe4cbc26d7f3f1a7c82cca61baf1be4f501fe0686f2b45", kill_on_drop: false }`
[INFO] [stderr] warning: variants `Cons` and `Nil` are never constructed
[INFO] [stderr]   --> src/lib.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 43 | enum List {
[INFO] [stderr]    |      ---- variants in this enum
[INFO] [stderr] 44 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 45 |     Nil,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]   --> src/lib.rs:52:4
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `RefCons` and `RefNil` are never constructed
[INFO] [stderr]   --> src/lib.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 69 | enum RefList {
[INFO] [stderr]    |      ------- variants in this enum
[INFO] [stderr] 70 |     RefCons(i32, RefCell<Rc<RefList>>),
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 71 |     RefNil,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `RefList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: method `tail` is never used
[INFO] [stderr]   --> src/lib.rs:77:8
[INFO] [stderr]    |
[INFO] [stderr] 76 | impl RefList {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] 77 |     fn tail(&self) -> Option<&RefCell<Rc<RefList>>> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `ref_main` is never used
[INFO] [stderr]   --> src/lib.rs:85:4
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn ref_main() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-smart-pointers` (lib) generated 5 warnings
[INFO] [stderr] warning: fields `0` and `1` are never read
[INFO] [stderr]   --> src/lib.rs:44:10
[INFO] [stderr]    |
[INFO] [stderr] 44 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stderr]    |     ---- ^^^^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     fields in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]    |
[INFO] [stderr] 44 |     Cons((), ()),
[INFO] [stderr]    |          ~~  ~~
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/lib.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |     RefCons(i32, RefCell<Rc<RefList>>),
[INFO] [stderr]    |     ------- ^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[INFO] [stderr]    |
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 70 |     RefCons((), RefCell<Rc<RefList>>),
[INFO] [stderr]    |             ~~
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-smart-pointers` (lib test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_smart_pointers-a63f1b3cf2d22e66)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::it_runs_main ... ok
[INFO] [stdout] test tests::it_sends_an_over_75_percent_warning_message ... ok
[INFO] [stderr] 
[INFO] [stderr] thread 'tests::it_runs_ref_main' has overflowed its stack
[INFO] [stderr] fatal runtime error: stack overflow
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/rust_smart_pointers-a63f1b3cf2d22e66` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "2c86839eaf2955db12fe4cbc26d7f3f1a7c82cca61baf1be4f501fe0686f2b45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c86839eaf2955db12fe4cbc26d7f3f1a7c82cca61baf1be4f501fe0686f2b45", kill_on_drop: false }`
[INFO] [stdout] 2c86839eaf2955db12fe4cbc26d7f3f1a7c82cca61baf1be4f501fe0686f2b45
